Right! This will only take a few moments.

[Rarity instructs Diana on where to move, how to stand, where to put her arms, etc, floating the measuring tape all around her and simultaneously manipulating a pencil on the other side of the room to write down the necessary measurements. This goes on for a few minutes.]

All right, that should do it! I'll have it ready for you tomorrow evening, if you'd like to stop by after dinner.